发明名称 |
Electrical vehicle traction equipment |
摘要 |
An improved traction apparatus for electrical vehicles that are supplied with energy over a contact line and that utilize a filter capacitor to smooth the input current to a DC convertor that is used to energize a driving motor. The improvement concerns means for avoiding surges of filter capacitor charging current when the line voltage rises after a line voltage drop. A thyristor is used to pass current to the convertor when the line voltage remains within a particular operational range and to block the flow of current to direct the current to a current limiting resistor when the line voltage begins to rise after a short duration or relatively longer duration voltage drop.
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申请公布号 |
US4220902(A) |
申请公布日期 |
1980.09.02 |
申请号 |
US19780944521 |
申请日期 |
1978.09.20 |
申请人 |
ASEA AB |
发明人 |
ARONSSON, OLLE;FRANK, KJELL;FRIDEN, LARS |
分类号 |
B60L3/04;(IPC1-7):H02P3/14 |
主分类号 |
B60L3/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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